Thermal Conductivity and Flame Retardancy of Carbon Nanotube Modified Epoxy Resin

doi:10.11944/j.issn.1000-0518.2017.01.160178

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (1): 46-53.DOI: 10.11944/j.issn.1000-0518.2017.01.160178

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Thermal Conductivity and Flame Retardancy of Carbon Nanotube Modified Epoxy Resin

ZHANG Lili^a^*(),DING Huimin^a,ZHANG Jitang^a,XU Donghua^b,LI Zhifeng^a

^aChangchun Faway-Johnson Controls,Changchun 130033,China
^bState Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

Received:2016-04-27 Accepted:2016-07-13 Published:2017-01-03 Online:2017-01-03
Contact: ZHANG Lili
Supported by:
Supported by the National Natural Science Foundation of China(No.21274152)

Abstract

Abstract:

Epoxy resin(EP) nanocomposites have been regarded as high performance materials with the advantages of organic polymers, inorganic materials and nanoparticles. Herein, DGEBA/MWCNTs nanocomposites were prepared based on diglycidyl ether of bisphenol-A(DGEBA),methylhexahydrophthalic anhydride(MHHPA) as curing agent, and multi-walled carbon nanotubes(MWCNTs) as additive.The effect of MWCNTs(mass fraction less than 1.5%) on thermal and flame retardancy of DGEBA epoxy resin was explored by DGEBA/MWCNTs nanocomposites structure, thermal properties, thermal conductivity and cone calorimeter analysis. MWCNTs formed cluster when their mass fraction is 1.5%. With increasing the content of MWCNTs, the glass transition temperature(T_g) and the temperature at which 5% mass loss of the composites increase initially and then decrease, at the same time the residual carbon content increases. Thermal conductivity of the composite exhibits a trend of rising initially and then decreasing afterwards. The maximal thermal conductivity appears when the mass fraction of MWCNTs reaches 1%. The total heat release volume of these composites decreases and the total volume of smoke release increases compared to those of epoxy resin. Cone calorimeter tests show that the incorporation of MWCNTs into epoxy thermosets can improve its flame retardancy to some extent.

Key words: epoxy resin, multi-walled carbon nanotubes, thermal conductivity, flame retardancy

ZHANG Lili, DING Huimin, ZHANG Jitang, XU Donghua, LI Zhifeng. Thermal Conductivity and Flame Retardancy of Carbon Nanotube Modified Epoxy Resin[J]. Chinese Journal of Applied Chemistry, 2017, 34(1): 46-53.

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Thermal Conductivity and Flame Retardancy of Carbon Nanotube Modified Epoxy Resin

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